OSS_IOC_VOID       52 compat/bsdos/bsdos_ioctl.c 		ocom |= OSS_IOC_VOID;
OSS_IOC_VOID       64 compat/freebsd/freebsd_ioctl.c         case FREEBSD_IOC_VOID:  ncmd |= OSS_IOC_VOID;  break;
OSS_IOC_VOID       49 compat/ossaudio/ossaudiovar.h #define _OSS_IO(x,y)        _OSS_IOCTL(OSS_IOC_VOID, x, y, 0)